Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08K
Use of inorganic or non-macromolecular organic substances as compounding ingredients
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C08K5/16
Nitrogen-containing compounds
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C08K5/22
Compounds containing nitrogen bound to another nitrogen atom
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C08K5/24
Derivatives of hydrazine
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C08K5/25
Carboxylic acid hydrazides
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